Don't think I've ever had my signature actually verified against a physical document - maybe against my passport signature- nor can I remember the last time I signed something in person tbh.
Your bank may well check what signature they hold on file for you if you ever need to sign something for them, but even that isnt likely in this age. They will have it scanned on file somewhere and if they don't they'll probably ask you to sign something.
Basically don't use your DL as signature proof if it's silly.
clap clap clap you are so bloody wise